Strange Quark Mass Dependence of the Tau Hadronic Width
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
The perturbative quark mass corrections to the tau hadronic width are studied to O(alpha_s^3 m_q^2). Including up to dimension four corrections, we get m_s(4 GeV^2)=(143 \pm 42) MeV [m_s(1 GeV^2)=(193 \pm 59) MeV ]. Possible improvements to reduce the theoretical uncertainty are pointed out.
Cite
@article{arxiv.hep-ph/9811263,
title = {Strange Quark Mass Dependence of the Tau Hadronic Width},
author = {Joaquim Prades and Antonio Pich},
journal= {arXiv preprint arXiv:hep-ph/9811263},
year = {2009}
}
Comments
Invited talk at High Energy Conference on Quantum Chromodynamics QCD'98, 2-8 July 1998, Montpellier (France). LaTeX, 8 pages with 3 ps figures